Which test measures blood sugar?

• A. B-type Natriuretic Peptide
• B. Complete Blood Count
• C. Basic Metabolic Panel
• D. Glucose

Answer: (D)

Measuring blood sugar is done by directly quantifying glucose in the blood. The glucose test reports the actual blood glucose level (in mg/dL) and is specifically used to assess sugar control or detect abnormalities in sugar metabolism. BNP tests measure a heart-hormone marker, not sugar. A complete blood count evaluates blood cells and components, not glucose. A basic metabolic panel screens several metabolic parameters, including electrolytes and kidney function, and it may include a glucose value as part of the panel, but its primary purpose is not to measure blood sugar directly. Therefore, the glucose test is the one that directly measures blood sugar.